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United States Patent | 5,670,074 |
Kass ,   et al. | September 23, 1997 |
A safety apparatus for shutting off a unit having a manually operated power interruption switch or fuel supply valve upon detecting a predetermined condition where the condition is detected remotely from the location of the switch or valve. The sensor for detecting the predetermined condition communicates with a receiver that contacts an actuator for opening the interrupt switch or closing the fuel supply valve without an interconnecting electrical wire.
Inventors: | Kass; Carl F. (P.O. Box 346, Cragsmoor, NY 12420); Little; Arthur W. (19 Scan St., Napanoch, NY 12458) |
Appl. No.: | 374021 |
Filed: | January 18, 1995 |
Current U.S. Class: | 219/481; 219/497; 219/502; 219/506; 340/825.69; 340/825.72 |
Intern'l Class: | H05B 001/02 |
Field of Search: | 219/481,502,488,497,506,501,494 340/825.36,825.69,825.72 |
4659909 | Apr., 1987 | Knutson | 219/452. |
4818970 | Apr., 1989 | Natale et al. | 340/539. |
4959647 | Sep., 1990 | Daigle | 340/825. |
4969508 | Nov., 1990 | Tate et al. | 165/22. |
5189392 | Feb., 1993 | Kass et al. | 340/521. |
5511553 | Apr., 1996 | Segalowitz | 128/696. |